Cremona's table of elliptic curves

28028 = 2² · 7² · 11 · 13

Class	r	Atkin-Lehner	Eigenvalues
28028a (1 curve)	1	2- 7+ 11+ 13-	2-  3 -2 7+ 11+ 13-  4  0
Curve Equation t Generators 28028a1 [0,0,0,-2401,-45619] 1 [1211868:3934063:19683]
28028b (1 curve)	0	2- 7+ 11- 13-	2-  3  0 7+ 11- 13- -2  0
Curve Equation t 28028b1 [0,0,0,-1225,21413] 1
28028c (2 curves)	1	2- 7- 11+ 13+	2-  0 -2 7- 11+ 13+ -2  4
Curve Equation t Generators 28028c1 [0,0,0,-56,49] 2 [-6:13:1] 28028c2 [0,0,0,-511,-4410] 2 [-13:6:1]
28028d (1 curve)	1	2- 7- 11+ 13+	2-  1  3 7- 11+ 13+ -4  0
Curve Equation t Generators 28028d1 [0,1,0,-133149,19059599] 1 [370:4537:1]
28028e (4 curves)	1	2- 7- 11+ 13+	2-  2  0 7- 11+ 13+ -6  4
Curve Equation t Generators 28028e1 [0,-1,0,-61413,-5837194] 2 [29199:931931:27] 28028e2 [0,-1,0,-58228,-6472920] 2 [38845158:-1240928038:35937] 28028e3 [0,-1,0,-116293,6125274] 2 [-33991848:-2340871953:681472] 28028e4 [0,-1,0,421972,46387496] 2 [26188941354705096:-1000981062580716091:26548935418368]
28028f (1 curve)	1	2- 7- 11+ 13+	2- -3  2 7- 11+ 13+ -4  0
Curve Equation t Generators 28028f1 [0,0,0,-49,133] 1 [4:1:1]
28028g (2 curves)	0	2- 7- 11+ 13-	2-  0  2 7- 11+ 13-  2 -4
Curve Equation t 28028g1 [0,0,0,-2744,-16807] 2 28028g2 [0,0,0,-25039,1512630] 2
28028h (1 curve)	0	2- 7- 11- 13+	2-  0  3 7- 11- 13+  6 -1
Curve Equation t 28028h1 [0,0,0,-56,-588] 1
28028i (2 curves)	2	2- 7- 11- 13+	2- -1 -3 7- 11- 13+  0 -2
Curve Equation t Generators 28028i1 [0,-1,0,4443,50401] 1 [-9:98:1]&[7:286:1] 28028i2 [0,-1,0,-81797,9234961] 1 [-240:3871:1]&[56:2197:1]
28028j (1 curve)	0	2- 7- 11- 13+	2- -3  0 7- 11- 13+  2  0
Curve Equation t 28028j1 [0,0,0,-60025,-7344659] 1
28028k (1 curve)	1	2- 7- 11- 13-	2-  0 -3 7- 11- 13- -6  1
Curve Equation t Generators 28028k1 [0,0,0,-2744,201684] 1 [245:3773:1]
28028l (2 curves)	1	2- 7- 11- 13-	2- -2 -4 7- 11- 13- -2 -4
Curve Equation t Generators 28028l1 [0,1,0,-1045,-10956] 2 [79:-637:1] 28028l2 [0,1,0,2140,-61916] 2 [72:-686:1]

Data from Elliptic Curve Data by J. E. Cremona.
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